La Tuna fire

Crews drop water on the La Tuna fire.

The La Tuna fire burned at least 500 acres by 5 p.m. Friday.

The La Tuna fire burned at least 500 acres by 5 p.m. Friday.

LAFD Engine 212 quickly rewraps hoses to move the truck away from a flareup on La Tuna Canyon Road in Sunland.

A flare up on La Tuna Canyon Road in Sunland.

A property burns along La Tuna Canyon Road in Sunland.

A big flare up on a steep, rocky, hillside on La Tuna Canyon Road in Sunland on Friday, September 1, 2017. The La Tuna fire closed the 210 Freeway, and La Tuna Canyon Road.

A fireman douses a hotspot on La Tuna Canyon Road.

Angeles National Forest firefighters walk to a trail into the hill ahead of the fire on La Tuna Canyon Road in Sunland on Friday, September 1, 2017. The La Tuna fire closed the 210 Freeway, and La Tuna Canyon Road.

Burroughs High School students Ella Spagnolo and Andie Toth, both 14, sit on the 50-yard line at Memorial Stadium after the football game was canceled because of the heat and poor air quality.

A fire helicopter water tanker flies over a brushfire in the Verdugo Mountains in Tujunga on Friday, September 1, 2017.   (Roger Wilson / Staff Photographer)

Smoke from a brushfire in the Verdugo Mountains billows up behind homes in Tujunga on Friday, September 1, 2017.   (Roger Wilson / Staff Photographer)

A resident uses a garden hose to keep a nearby pile of burning wood in check on La Tuna Canyon Road in Sunland.

LAFD Engine 212 moves away from a hotspot on La Tuna Canyon Road in Sunland.

A L. A. County water tanker helicopter does a water drop on a brushfire near powerlines in the Verdugo Mountains in Tujunga on Friday, September 1, 2017.   (Roger Wilson / Staff Photographer)

A fireman douses a hotspot along La Tuna Canyon Road in Sunland.

A firefighter with Engine 275 on La Tuna Canyon Road in Sunland.

Firemen douse a hotspot on La Tuna Canyon Road in Sunland.

A fireman sprays a hotspot on La Tuna Canyon Road in Sunland.

A Los Angeles Fire Department cadet runs away from a hotspot along La Tuna Canyon Road in Sunland.

A Los Angeles Fire Department helicopter douses a hotspot along La Tuna Canyon Road.

Firefighters check a map of the area along La Tuna Canyon Road.

The southbound I-5 through Burbank on Friday.

The southbound I-5 through Burbank on Friday after the La Tuna fire closed the 210 Freeway, sending traffic to the I-5.

Burroughs High School students socialize in the Memorial Stadium bleachers with an empty field behind them after the cancellation of the evening’s football game.

An L.A. County helicopter does flies over a brushfire near the Cross of Ysidro in the Verdugo Mountains in Tujunga on Friday, September 1, 2017.

A brushfire burns in the Verdugo Mountains across the 210 freeway behind homes in Tujunga on Friday, September 1, 2017.

An L.A. County fire helicopter water tanker does a water drop on a brushfire in the Verdugo Mountains in Tujunga on Friday, September 1, 2017.